文档介绍：第九章两因素及多因素方差分析
，为便于饮用，制成泡袋剂。研究不 同浸泡时间和不同的浸泡温度对浸泡效果的影响，设计了一个两因素交叉分组实验，实验结 果（浸出率）见下表［刃：
浸泡温度
/°c
浸泡时间/min
10
15
20
60
80
2&32
95
对以上结果做方差分析及Duncan检验。该设计已经能充分说明问题了吗？是否还有更能说 明问题的设计方案？
答：无重复二因素方差分析程序及结果如下：
options linesize=76 nodate;
data hermed;
do temp=l to 3;
do time=l to 3;
input effect @ @;
output;
end;
end;
cards;
run;
proc anova;
class temp time;
model effect=temp time;
means temp time/duncan alpha=; run;
The SAS System
Analysis of Variance Procedure
Class Level Information
Number of observations
in data set 二 9
Class
Levels
Values
TEMP
3
1 2 3
TIME
3
1 2 3
The SAS System
Analysis of Variance Procedure
Dependent Variable: EFFECT
Sum of
Mean
Source
DF
Squares
Square
F Value
Pr > F
Model
4
12. 56
Error
4
1. 7330444
Corrected Total
8
R-Square
C. V.
Root MSE
EFFECT Mean
0. 926256
4. 741881
1. 31645
27. 7622
Source
DF
Anova SS
Mean Square
F Value
Pr > F
TEMP
2
22. 71
0. 0066
TIME
2
4. 1752444
0. 2058
The SAS System
Analysis of Variance Procedure
Duncan，s Multipie Range Test for variable: EFFECT
NOTE: This test controls the type I compa